Caster for operating-tables.



A. TAUBBRT. CASTER PoE OPERATING TABLES. APPLIGATIQN FILED JULY 7. 1909.

l Patented Mar. 1.1910.

UNiTED 'STATES PATENT OFFICE.

ALBERT TAUBERT, NEW YORK, yY., ASSIGNOR T O THE KNY SCHEERER ICOMPANY, Y OF NEW YORK, N. Y.,-A. CORPORATION OF vNE YORK.

casrsn vF012. orEnATINGrABLEs.

Specification of Letters Patent.

Patented Mar. 1, 1910.

To all whom 'it may ooncem: I' .v

Be it known Vthat I, ALBERT TAUBERT, a

` citizen of the Unite'd States, and resident of the boron h of Manhattanycity, county, and State of ew York, have invented certain new and useful Improvements in Casters for Operating-Tables, of which the 'following is a specification.

This'invention relates to casters for operating tables, and the like, and'its novelty consists in the construction` and adaptation of the parts as will be more fully hcreinafter pointed out.-

In the drawingsFigurer1.is a miniature perspective of a-table provided with the invention and showing the casters. resting on the floor; Fig. 2 is a similar view of the .same table showing the casters lifted from the floor; Fig` 3 is an enlarged side elevation and partial vertical section (through the table leg) showing a singlecaster restinon the floor, and Fig. 4 is a view similar to ig `3 showing the casterslifted from the Hoor;

Fig. 5 isa erspective view of the o erating lever and Fig. Sis a detail of the eg suport,

p In. the drawings, is a table or similar device provided with depending legs 11.

Each leg is provided with an upwardly extending recess 12.adaptedv to receive Ythe shank 13 of a caster frame 14, which frame comprises rigid forks 1.5, which depend obliquely from the shank and which, near their lower extremities, are provided with a' transverse rod 16 constituting the axle of a disk roller 17, which is the caster proper. The shankV 13 is grooved at any'suitable place, as at 130, and a set screw 131, adapted to pass through a suitable aperture 'in the table leg 11 to yengage this groove, enab les each caster shank to bel rotatably adjusted within the leg and to be secured in place after such adjustment. The device so far described constitutes a complete caster with a rotatably adjustable connection to the table.

Adapted to swing-on the rod 16 is a leg supporting member comprising two side plates, 20', one on each side of the roller 17, and which plates are.connected together by a cross piece 21, the outer lower surface of which is perfectly flat and which rests upon the Hoor (indicated at '18 in Figs.3 and 4) when the parts are in the position shown in Figs. 2 and 4, and the cast-ers are raised from theiioon The upper edge -of each plate 2O is provided with a curved surface 22 adapted to contact with the coperating lower edge of the side plates of the operating lever presently to be described.

. Two pivots, 25, project from the frame 14, one on each side thereof. On these pivo'ts there is adapted to swing an operating lever 26 which comprises two curved side plates27 and two terminal transverse cross plates 29 and 30.

Two links 31, one on each side of the caster frar`n e,'and` each pivoted to one of the side plates 20 of the leg support by a screw 4pivot 32, and also to one ofthe side plates 27 of the operating lever-by a similar serew pivot 33, serve to connect these parts together. v v Normally, when the caster rollers rest upon the floor the casters and the connected parts are inthe positions shown in Figs. 1 and 3. In thesel ositions the upper transverse plate 29 oft e o rating lever-.is above the lower transverse; ate 30 of the same lever. supported from the rod 16 and the table is free to be moved on its casters, in the usual manner. Now, supposing that the'table has been moved to the place where it is desired to beemployed and it is then desired to lift the casters from the Itloor, the operator presses down upon the transverse "rod 29 ot' the operating lever, preferably' with his foot,-and this swings the operating lever into the osition shown in Fig. 4, the lower edge of tli'e plate 27 contacting with the surface.22 of each plate 20 to press the leg su port `firmly down upon the floor. Att e s me time the link 31 is so moved by the oscillation of the operating leveraround the pivots 26 that the: pivot screw 33 asses beyondand on theother side vof a. p ane passing through the axes of the. pivots and screw pivots 32 forming a .rigid'joint or con- .nection 'through the 'link between thecaster frame 14 and the leg support22 and lifting the roller 17 Y from the floor. When itis desiredto re-set the caster rollers on the Hoor, the operator places his foot-upon the trans-- verse bar and pushes it downward, wherelinks connecting the leg supporting frame 7 The ca ster frame rests lupon and is l i" and the operating lever or frame, form` with" the 'caster 'frame a'toggle joint which canbe lockel and unlocked by the oscillation of the operating lever. l l `Whatl elimas new is zLA j l. In a' devicejof the character described7 a .caster frame, a. support,pivoted'thereto, and means forjnovingsaid support on its pivot `to liftthe frame, comprising-a link pvoted mille-Support', and a. pivotal connection `be.

tweenfetheiilinlrandthe frame. i

2Ll'n a device ofthecharacter described, a

".easter-ffframe'ra sup ort pivotally connected a -pivotalcpnnlectionl between the lmlt and with''the frame,-;an means for moving said supportgvtoill'ft theframe, comprising a link,

the s uppdrtpand a', double' pivotal connection between the link and` the fraine, and a device .foninoving the position of one of the pivots i .casterjfrmeriasupport :pivotally connected therflamegandmeans formovmg said plv'ota-l connection between the link and the Support,landndouble pivotal connection ported-therein `55,41. legsupport, a pivotal con- .linl f, anpilvot 'between-it. and the supportand pivotgbetiveniib andthe frame and a devicel` for fmovuig, the position of the pivot lacstmentioned,11ncludingia lever.

i Ink adev'rce; vof the 'character described,

tvo side members an a pivotal. connection between the support' aiica'sterfrme,- a caster roller rotatably sup-v vprtedx. thereby,;l a :le` support, comprising d a transverse member,

and the Vcasterfrazne and means formoving it with respe'lrto the castel-Airframe to 'elevate the latter, comprising a link, a pivot betWeencit-ean] .ft et support-Tand a ,pivot betionedinc ing's'lever-' '6.'1In la' dviceof' theeharacter described, a castrz'framgacasteroller rotatably snp- `movngifhiosition off-the 'phot last mvn- -l'orte'dnthe'reb gale support, comprising wo sidmem ers'an n transverse member,

l-agpiv'tal connection-"between the leg/"support `and the caster roller and means for moving it with respectlto the caster frame to elevate the latter, comprising alink, aI pivotbetweenit and the support and fa pivot between it and the frame 7. Ina vdeviez` of the character described, a .leg support comprising. t-wo side members and a transverse memberhaving a flat outer surface normally oblique `to the 4plane of the horizon.

8. In a device of the character described, a leg support comprising two side members and a transverse member having a flatou'ter surface normally obliqueto the plane of the horizon, in combination with means for moving it into such plane.

S). In a device of the character described, a leg-snppmt comprising two side members and a transverse membenhaving a, flatouter snrfacenormally obliqueto the plane of the horizon, Ain combination Awith' means for fmoving it into such plane', comprising pivots on which it 1s adapted to swlng, a `hnk by which it mayfbe moved and means for mov ing'the link.v

Q10. ln a device of the character described, a leg support comprising bvo side members and a Vtransverse member having afflat outer surface normally oblique 4to the plane of the horizon, in combination with means for moving it. into such plane, eomprisinfr pivots on which it is adapted to'stving, aliinkby which it ma) be moved and means for moving the link, including an oscillatin lever;

1l. A caster frame comprising orks, a roller supported betteeeu them, a supporting frame adapted to swingontlle forks of the caster frame, an operating frame adapted to swing on pivots on the caster frame, and links 'pivoted to both' the supporting -frame and operating fram-e by the movement of which the )ivots connecting thelinks to the operating rxme are moved from one side of the plane passing through the-axes of-the pivots of the Voperating lever and the axes of the pivotsconnecting the linkto the supi porting frame, 'to the other side'ofthe same plane. i

iVitness my hand this 18th day of June, 1900, at.- New York, N; Y.`

c ALBERT TA'UBERT.: Witnesses f GEORGE VVoHN, S. J.Co\'.V 

